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-rw-r--r--isar/isar-syntax.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/isar/isar-syntax.el b/isar/isar-syntax.el
index 244b40a0..ffbc6583 100644
--- a/isar/isar-syntax.el
+++ b/isar/isar-syntax.el
@@ -368,7 +368,7 @@
;; ----- variations on undo
-(defconst isar-undo "undo;")
+(defconst isar-undo "ProofGeneral.undo;") (* no output undo *)
(defconst isar-kill "kill;")
(defun isar-remove (name)